<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">
    <title>Jiao-FirstAdminPrpject</title>
    <style>
       html,body{
        width: 100%;
        height: 100%;
      }
      #app{
        width: 100%;
        height: 100%;
        position: relative;
      }
    </style>
  </head>
  <body>
    <div id="app"></div>
   
  </body>
</html>
